HTTP Port Conflict when Starting the Integrated WebLogic Server Instance: " Unable to obtain lock on ... Server may already be running"

(Doc ID 1080922.1)

Last updated on AUGUST 04, 2016

Applies to:

Oracle JDeveloper - Version and later
Information in this document applies to any platform.
***Checked for relevance on 17-Feb-2012***


When starting an application on JDeveloper 11g error messages like the following ones are displayed and the application cannot be run:

**** HTTP port conflict detected. The HTTP port will be reassigned to port 7102.
"C:\Documents and Settings\user\Application Data\JDeveloper\system11.\DefaultDomain\bin\startWebLogic.cmd"
[waiting for the server to complete its initialization...]
<05-04-2010 10:31:51 AM CLT> <Critical> <WebLogicServer> <BEA-000362> <Server failed. Reason:
There are 1 nested errors: Unable to obtain lock on C:\Documents and Settings\user\Application Data\JDeveloper\system11.\DefaultDomain\servers\DefaultServer\tmp\DefaultServer.lok. Server may already be running
       at weblogic.t3.srvr.ServerServicesManager.startService(
       at weblogic.t3.srvr.ServerServicesManager.startInStandbyState(
       at weblogic.t3.srvr.T3Srvr.initializeStandby(
       at weblogic.t3.srvr.T3Srvr.startup(

Also, a window like the following can be displayed:


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